/// <summary>
/// 按指定的配置元素名称创建应用程序日志对象。
/// </summary>
/// <param name="elementName">配置元素名称。</param>
/// <returns>日志对象。</returns>
/// <remarks>
/// 1. 配置元素：USe.Common.AppLogger/appLoggers/appLogger。<br/>
/// 2. 辅助的IAppLogger对象创建方法，与Singleton模式的静态实例变量无关。
/// </remarks>
public static IAppLogger CreateInstance(string elementName)
{
/*
* AppLoggerElement element = AppLoggerSectionGroup.FindAppLoggerElement(elementName);
* if (element == null)
* {
* throw new ArgumentException("Not found the special appLogger configuration element.");
* }
*/
AppLoggersSection section = AppLoggersSection.GetSection();
if (section == null)
{
throw new ConfigurationErrorsException("Not found the appLogger configuration section.");
}
return(CreateInstance(section.AppLoggers[elementName]));
}
/// <summary>
/// 初始化IAppLogger应用程序日志对象。
/// </summary>
/// <returns>日志对象。</returns>
/// <remarks>
/// Singleton模式的静态实例变量的创建方法。
/// </remarks>
public static IAppLogger InitInstance()
{
// 检查是否重复初始化
if (ms_singleInstance != null)
{
Debug.Assert(false);
throw new ApplicationException("IAppLogger object already initialized.");
}
AppLoggersSection section = AppLoggersSection.GetSection();
if (section == null)
{
throw new ConfigurationErrorsException("Not found the appLogger configuration section.");
}
ms_singleInstance = CreateInstance(section.AppLoggers["Default"]);
//ms_singleInstance = CreateInstance("Default");
// 缺省使用名称为"Default"的配置元素，区分大小写
return(ms_singleInstance);
}
